fixed incompatibility with REST addon

modules/web/src/com/haulmont/addon/saml/saml-dispatcher-spring.xml

@@ -25,7 +25,7 @@
            http://www.springframework.org/schema/context
            http://www.springframework.org/schema/context/spring-context-4.3.xsd
            http://www.springframework.org/schema/security
-           http://www.springframework.org/schema/security/spring-security-4.2.xsd">
+           http://www.springframework.org/schema/security/spring-security.xsd">
 
     <!-- Enable auto-wiring -->
     <context:annotation-config/>